Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a densidade populacional para 2012 no setor de Gatunda?
 ###Tabelas: CREATE TABLE force_composition (force_composition_id AUTO_INCREMENT PRIMARY KEY, NATO member VARCHAR, Aircraft carriers VARCHAR, Battleships VARCHAR, Cruisers VARCHAR, Escorts VARCHAR, Submarines VARCHAR, Torpedo boat squadrons VARCHAR, s Motor ship / s Naval trawler VARCHAR, Grand Total INT) CREATE TABLE affiliates (affiliates_id AUTO_INCREMENT PRIMARY KEY, Calls VARCHAR, Frequency VARCHAR, Branding VARCHAR, Format VARCHAR, Timeslot VARCHAR, Group owner VARCHAR) CREATE TABLE list_of_nyagatare_sectors_by_population_2012 (list_of_nyagatare_sectors_by_population_2012_id AUTO_INCREMENT PRIMARY KEY, Rank in Nyagatare Sectors, 2012 INT, Sector VARCHAR, Area in sqkm INT, Population August 15, 2012 INT, Population, August 15, 2002 INT, Population Change 2002-2012 (%) VARCHAR, Population Density 2012 (km 2 ) INT) CREATE TABLE doubles_titles_5 (doubles_titles_5_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Tournament VARCHAR, Surface VARCHAR, Partner VARCHAR, Opponents in the final VARCHAR, Score VARCHAR) CREATE TABLE immigration_by_state (immigration_by_state_id AUTO_INCREMENT PRIMARY KEY, North Carolina VARCHAR, 273.7% VARCHAR, South Carolina VARCHAR, 132.1% VARCHAR, Mississippi VARCHAR, 95.8% VARCHAR, Wisconsin VARCHAR, 59.4% VARCHAR, Vermont VARCHAR, 32.5% VARCHAR)  
SELECT MIN Population Density 2012 (km 2 ) FROM list_of_nyagatare_sectors_by_population_2012 WHERE Sector = Gatunda